Backup/Restore (Nas); Figure 60 Cascade Copy (Using Four Copy Sessions) - Fujitsu ETERNUS DX S5 Series Design Manual

2. Basic Functions
Backup (Advanced Copy)
A Cascade Copy that uses the four copy sessions can be performed with the following configuration.
However, two EC sessions in the copy destination storage system cannot be "Active" at the same time.
Figure 60
ETERNUS AF/DX
A
ETERNUS AF/DX
A
: Copy session 1
: Copy session 2
: Copy session 3
: Copy session 4

Backup/Restore (NAS)

The entire NAS user volume can be backed up to a NAS backup volume. In addition, the entire NAS backup
volume can be restored to a NAS user volume. The entire volume can be backed up and restored with volume
copy using QuickOPC of the Advanced Copy function. In addition, backups and restores can also be performed to
another ETERNUS DX using REC of the Advanced Copy function.
A NAS backup volume in the backup destination can be referenced by using the mount function of the NAS
backup volume. This allows users to restore data on a per file basis by copying specific files from the NAS backup
volume.
For details on backing up NAS user volumes, refer to
Cascade Copy (Using Four Copy Sessions)
B
REC
EC
(Stack mode)
B
REC
QuickOPC
(Stack mode)
ETERNUS AF/DX
C
EC
ETERNUS AF/DX
C
EC
"Backup" (page 195).
120
D E
EC
D E
EC
Design Guide